21 divided by what equals 12?


21 divided by what equals 12? In other words, you have 21 and you divide it by something and then you get 12. What is that something?

We will call that something "X". Here is the equation to find the solution:

   
21
 
   
X
 
  = 12

First, multiply both sides by X to get rid of the X as denominator.

   
21(X)
 
   
X
 
  = 12(X)

  21 = 12X

Then, divide both sides by 12 to get X by itself as follows:

   
21
 
   
12
 
  =
   
12X
 
   
12
 

  1.75 = X

Thus, the answer to "21 divided by what equals 12?" is 1.75.


Note that our answers are rounded to the nearest thousandth if necessary. You can divide 21 by 1.75 to check that we got the right answer.

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